The bug is still present for me in 16.04 as well. Dual monitor - ctrl-alt-l or turn screen off when inactive do not turn off the screen.
The workaround suggested from fugounashi works i.e., xset dpms force off but it is not permanent. The problem will come back after a while. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1292041 Title: Lockscreen doesn't turn off the screen To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1292041/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs